Series:

Calcudoku - Hard

5 primary works

Book 1

Cover of Calcudoku Puzzles Book - 200 Hard Puzzles 9x9 (Volume 1)

Book 2

Cover of Calcudoku Puzzles Book - 200 Hard Puzzles 9x9 (Volume 2)

Book 3

Cover of Calcudoku Puzzles Book - 200 Hard Puzzles 9x9 (Volume 3)

Book 4

Cover of Calcudoku Puzzles Book - 200 Hard Puzzles 9x9 (Volume 4)

Book 5

Cover of Calcudoku Puzzles Book - 200 Hard Puzzles 9x9 (Volume 5)